要使用Apache CXF通过代理进行SSL，你可以按照以下步骤进行操作：

1. 创建HTTPConduit对象并设置代理主机和端口：

HTTPConduit conduit = (HTTPConduit) client.getConduit();
HTTPClientPolicy httpClientPolicy = new HTTPClientPolicy();
httpClientPolicy.setProxyServer("proxy.example.com");
httpClientPolicy.setProxyServerPort(8080);
conduit.setClient(httpClientPolicy);

2. 创建TLSClientParameters对象并设置SSL相关参数：

TLSClientParameters tlsParams = new TLSClientParameters();
tlsParams.setDisableCNCheck(true); // 忽略证书的CN检查
tlsParams.setSecureSocketProtocol("TLSv1.2"); // 设置SSL/TLS协议版本

KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
trustStore.load(new FileInputStream("truststore.jks"), "password".toCharArray());

TrustManagerFactory trustFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustFactory.init(trustStore);

tlsParams.setTrustManagers(trustFactory.getTrustManagers());
conduit.setTlsClientParameters(tlsParams);

3. 创建ProxyAuthorizationPolicy对象并设置代理身份验证参数：

ProxyAuthorizationPolicy proxyPolicy = new ProxyAuthorizationPolicy();
proxyPolicy.setUserName("username");
proxyPolicy.setPassword("password");
conduit.setProxyAuthorization(proxyPolicy);

4. 创建Client对象并发送请求：

Client client = ClientProxy.getClient(yourService);
client.invoke("yourOperation");

以上是通过代理进行SSL的基本示例，你可以根据自己的需求进行相应的配置和修改。